Unerve or Unnerve: How To spell?
The word Unerve is misspelled against Unnerve, a verb meaning "To deprive of nerve, force, or strength; to weaken; to enfeeble; as, to unnerve the arm."
Unnerve has double "nn" is mispronounced as "n"Remember double 'NN' in between the strings u & erve which should not be misspelled with single 'N'
Wrong Spelling:  u-n-erve  Correct Spelling:  u-nn-erve 
Explore spell check of Unnerve to spell without errors.